cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A168174 Emirps (A006567) with emirp number of digits and emirp digital sum.

Original entry on oeis.org

1000000001159, 1000000002217, 1000000003463, 1000000004161, 1000000005713, 1000000005911, 1000000006037, 1000000006451, 1000000006699, 1000000007333, 1000000009403, 1000000010249, 1000000010447, 1000000010483, 1000000011019
Offset: 1

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Author

Jonathan Vos Post, Nov 19 2009

Keywords

Comments

Last 13-digit examples: 9999999990583, 9999999990853, 9999999995191, 9999999996901, 9999999997919, 9999999998987. First examples of some digit lengths: 10^16 + {79, 1551, 3711, 7711, 9421, 9867}; 10^30 + {2613, 29979, 37857, 41461, 47577}; 10^36 + {9061, 21081, 52351, 71017, 95781}; 10^70 + {691, 19321, 203403, 225201, 231987}; 10^72 + {97167, 158637, 227001, 233679, 265021}. ... and skipping a few other legal lengths... 10^148 + 53967 -- Jack Brennen

Examples

			a(1) = 1000000001159, which is prime, and R(1000000001159) = 951100000000 is prime, and sod(1000000001159) = 17 is prime, and R(17) = 71 is prime.

Crossrefs

Cf. A000040, A006567, A167992, A007953, A055642, A114018, A167992.

Formula

{p: p in A006567 and A055642(p) in A006567 and A007953(p) in A006567}.
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